Please don't jump to this conclusion, I'm not doing that. If some GTK3 users want to continue developing GTK3 or use some other toolkit then that's absolutely fine with me. I said that before, I could even recommend some other toolkits for you to use. But I think it's a bad idea to view GTK3 as some kind of resistance against GTK4 because that's missing out on many years of improvements that would be very difficult to backport. Yes there are bugs in GTK4, but I've also talked to the developers and they are aware of them and are working on solving the issues even if progress seems slow. You can read some of the GTK4 blogs to see some of the enhancements that were made in GTK4 and decide if they're worth it to you or not: https://blog.gtk.org/2020/12/16/gtk-4-0/

>I'm letting you know here and now that there is an expanding sentiment among developers that GTK4 is a regression from GTK3

This is not really surprising or new or that much of a big deal, people complained when GTK2 was released because it changed stuff from GTK1, then they complained when GTK3 was released because it changed stuff from GTK2. It's totally understandable and normal for some to want to avoid or delay making the switch, but many others have been willing to make it for the improvements.

>Every attempt I've made to reach out to developers has either gone cold or been rejected. The current leadership has made it clear that they don't have my best interests at mind.

Well if you were on freenode then those probably weren't the upstream developers or any of the current project leadership so I think you might have a wrong impression; you're saying a whole lot of negative things but the underlying logic just doesn't really add up to me. I'm not interested to argue with you either, if you can just mention what the issue is with your app I might be able to help you.

>They'd rather scrap everything I used and promise a replacement instead of iterating on it or fixing it, which is unacceptable for a toolkit that is currently in active use.

This statement is also confusing to me, the replacement is the iteration and fixing. It's being worked on. It can't really be any other way, Glade is a very old application from the GNOME 1 days that's been continuously ported and it still inherits some old design flaws from that. To finally fix the design flaws the program needs some major breakage or a rewrite, so they decided to go with the rewrite because it's actually easier than hacking apart all the internals of Glade and breaking the whole program. And by "they" I mean the one person who has been working on Glade for the last few years and is now working on the replacement. I don't know what "promise" you're talking about either, I think it's a bad situation that only one person is working on this. He could stop working on it at any time and then you'd have no GUI builder at all, the "bus factor" on these projects is a concern right now.

>I refuse to donate my time or effort to people who disrespect me like that.

I'm not suggesting you do that, it seems more like you were asking about taking time or effort to fix your own application.